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Pastimes : Digital Photography -- Ignore unavailable to you. Want to Upgrade?

To: Murrey Walker who wrote (14587)	8/26/2006 5:39:43 PM
From: Elsewhere	Read Replies (1) \| Respond to of 21652

Sorry for the foreign language... As a special service for you ;-) here a manual translation (all errors are mine): forum.astronomie.de Comment on test in ColorPhoto May 1980, p. 48-58 Walter E. Schön, February 20, 2005 For 14 years during the 1970ies and 80ies I tested a selection of 35 mm lenses for the magazine ColorFoto colorfoto.de Issue 4/80 and 5/80 contained reviews of mirror lenses with a focal length of 500 mm. In the second part of this test in issue 5/80 I tested normal lenses in addition to the mirror lenses - the very expensive Leica Telyt-R 560/6.8, the Novoflex Noflexar 600/8, which was frequently used by wildlife photographers, the fast Pentax SMC 500/4.5 and the comparatively cheap Beroflex 500/8 which cost only 200 DM or less then. The first two lenses (Leica, Novoflex) were achromats, the other ones constructions with an integrated Barlow element. The result was that the cheap Beroflex not only had a good price/performance ratio but was able to keep up rather well with the competitors (exceptions: slow - f/8 - and no automatic aperture). As a result I wrote: The Beroflex lens has a price/performance ratio which by far no other lens of the test was able to match. Compared to mirror lenses it is a "long bag" but considering its optical quality and its low price it rather deserves to be called "wonder bag". Beroflex has quoted this last sentence of mine for years in ads, thus the lens has become popular with the nickname "wonder bag". [The rest is of less general interest as it concerns the suitability of the lens for astronomy.]